By Statcast classifications, Spencer Arrighetti has thrown six types of pitches in his first seven major league innings, in descending order by usage rates: Four-seam fastball (38.6%), cutter (25.9%), sweeper (18.7%), curveball (10.8%), slider (3.6%), and changeup (2.4%). His six sliders thus far could’ve also been intended as a sweeper or cutter, but the captured movement profile triggered the original Statcast classification. In any case, we’ve seen all of Arrighetti’s pitches as advertised during his time in the minors.
Of course, Arrighetti’s first start against the Royals didn’t proceed according to plan. He was essentially BABIP’d into defeat, with an average exit velocity of 84.